Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
A=2016/2017+2017/2018
Do 2016/2017<1,2017/2018<1=> A<2 Hay A<B
A=2006^2005+1/2006^2006+1
B=2006^2006+1/2006^2007+1
Có : 2006A = 2006^2006+2006/2006^2006+1
= 1 + 2005/2006^2006+1 2006B
= 2006^2007+2006/2006^2007+1
= 1 + 2005/2006^2007+1
Vì : 2006^2006 < 2006^2007
=> 2006^2006+1 < 2006^2007+1
=> 2005/2006^2006+1 > 2005/2006^2007+1
=> 2016A > 2016B
=> A>B
Ta có:
\(A=\frac{2006^{2005}+1}{2006^{2006}+1}\)
\(\Rightarrow2006A=\frac{2006^{2006}+2006}{2006^{2006}+1}=\frac{\left(2006^{2006}+1\right)+2005}{2006^{2006}+1}=1+\frac{2005}{2006^{2006}+1}\)
Ta lại có:
\(B=\frac{2006^{2006}+1}{2006^{2007}+1}\)
\(\Rightarrow2006B=\frac{2006^{2007}+2006}{2006^{2007}+1}=\frac{\left(2006^{2007}+1\right)+2005}{2006^{2007}+1}=1+\frac{2005}{2006^{2007+1}}\)
Ta thấy:
\(\frac{2005}{2006^{2006}+1}>\frac{2005}{2006^{2007}+1}\Rightarrow2006A>2006B\Rightarrow A>B\)
Vậy A>B.
Ai k mình, mình k lại.
A = \(\dfrac{2006^{2016}+1}{2006^{2017}+1}\)
A \(\times\) 2006 = \(\dfrac{(2006^{2016}+1)\times2006}{2006^{2017}+1}\)
A \(\times\) 2006 = \(\dfrac{2006^{2017}+2006}{2006^{2017}+1}\)
A \(\times\)2006 = 1 + \(\dfrac{2006}{2006^{2017}+1}\)
B = \(\dfrac{2006^{2015}+1}{2006^{2016}+1}\)
B \(\times\) 2006 = \(\dfrac{\left(2006^{2015}+1\right)\times2006}{2006^{2016}+1}\)
B \(\times\) 2006 = \(\dfrac{2006^{2016}+2006}{2006^{2016}}\)
B \(\times\) 2006 = 1 + \(\dfrac{2006}{2006^{2016}+1}\)
Vì \(\dfrac{2006}{2006^{2016}+1}\) > \(\dfrac{2006}{2006^{2017}+1}\)
=> B \(\times\) 2006 > A \(\times\) 2006
B > A